Yan Guangfeng: Drinks with paper towels stirring fading may not be excessive pigment.

Beijing Times (reporter Qian Yuyang) "pour the orange soda drink into the glass, and then put in a napkin to stir quickly." A minute later, the drink in the cup appears transparent, and the tissue turns orange. Recently, such a "drink by napkin stirring will fade" video on the Internet, many people questioned the soda drink in the pigment exceeding the standard. Experts say napkins do have adsorption pigment for , but the experiment does not prove that the pigment in drinks exceeds the standard.in order to verify the phenomenon in this video, the reporter purchased The Yearda, tissue paper to do experiments. In the process of stirring, the reporter can clearly see the paper from white gradually changed to orange. Then the reporter added three tissue sheets in the cup, each stirring time of one minute. After the reporter used four tissue sheets, the color of the Yeardain the cup was noticeablely lighter, but did not achieve the "transparent" effect in the video.this, food and nutrition information exchange center expert Yan Guangfeng said that the above experiments can only show that napkins on the pigment adsorption effect, but can not prove that the pigment content in drinks is too high. There are basically two kinds of pigments, one is a natural pigment, such as the pigment extracted from the fruit, and the other is synthetic pigment, that is, the use of synthetic methods produced by themachine pigment, the pigment added to the beverage is many of these. "Napkins have many micro-holes and voids, and synthetic pigment particles are larger than natural pigment particles and are more easily adsorbed to napkins."also said that the video of the experiment can not explain the pigment content of the above standard, as long as the product qualified to drink. "The label of the product, as long as it is marked with pigments such as lemon yellow and sunset yellow, does not prove to involve -to-label fraud. At the same time, as long as these pigments are allowed by the state and are in legal doses, consumers need not worry. ", however, he cautions that for children and adolescents, it is important to stay away from pigmented beverages in terms of prevention." Not only is it pigmented, but the drink itself is high in sugar. Regular drinking also causes children's teeth to be eroded to varying degrees of acidity and are prone to tooth decay. "
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